the result is (i typed '42' as the value to display) :
$_POST['entry1'] = 42Entry1=42; //it glues both variable name+value

It does works well with GET method, but not with POST. The phpinfo() method shows that the _POST variable =>'42Entrey1=42'<= and that the QUERY_STRING variable is empty (wich is not true with the GET method wich works properly)...